Subject: appletalk induced soft lockup

From: Dave Jones <[email-masked]>
Date: Sun, 30 Jun 2013 19:42:52 -0400

is atalk even maintained any more ? If not I'll take it out of my testing.
Arnaldo is listed as its maintainer, but I'm sure he has more interesting things
to work on these days :)

	Dave

BUG: soft lockup - CPU#0 stuck for 22s! [trinity-child1:28929]
Modules linked in: dlci bridge stp fuse tun snd_seq_dummy hidp rfcomm bnep ipt_ULOG scsi_transport_iscsi can_raw af_802154 nfnetlink netrom appletalk ipx p8023 psnap p8022 x25 af_rxrpc can_bcm phonet can caif_socket caif l
lc2 rose llc irda crc_ccitt ax25 af_key atm pppoe pppox ppp_generic slhc rds bluetooth nfc rfkill snd_hda_codec_realtek coretemp hwmon kvm_intel kvm snd_hda_codec_hdmi crc32c_intel ghash_clmulni_intel microcode usb_debug snd_seq snd_hda_
intel snd_seq_device pcspkr snd_hda_codec e1000e snd_hwdep ptp snd_pcm pps_core snd_page_alloc snd_timer snd soundcore xfs libcrc32c
irq event stamp: 2975873
hardirqs last  enabled at (2975872): [<ffffffff816edca0>] restore_args+0x0/0x30
hardirqs last disabled at (2975873): [<ffffffff816f67aa>] apic_timer_interrupt+0x6a/0x80
softirqs last  enabled at (1374414): [<ffffffff810542e4>] __do_softirq+0x194/0x440
softirqs last disabled at (1374867): [<ffffffff8105474d>] irq_exit+0xcd/0xe0
CPU: 0 PID: 28929 Comm: trinity-child1 Not tainted 3.10.0-rc7+ #37
task: ffff8801c142ca40 ti: ffff8802280a8000 task.ti: ffff8802280a8000
RIP: 0010:[<ffffffff816ed077>]  [<ffffffff816ed077>] _raw_spin_unlock_irqrestore+0x67/0x80
RSP: 0018:ffff880244803df0  EFLAGS: 00000282
RAX: ffff8801c142ca40 RBX: ffffffff816edca0 RCX: 0000000000000002
RDX: 00000000000022c0 RSI: ffff8801c142d1f8 RDI: ffff8801c142ca40
RBP: ffff880244803e00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff880244803d68
R13: ffffffff816f67af R14: ffff880244803e00 R15: ffffffff81cc4500
FS:  00007fbf71087740(0000) GS:ffff880244800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000003e12810414 CR3: 00000001c166a000 CR4: 00000000001407f0
DR0: 00000000021d17e0 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Stack:
 0000000000000282 ffffffff81cc4560 ffff880244803e18 ffffffff8158562d
 ffffffff820ff240 ffff880244803e88 ffffffff8105ca7a ffffffff8105c9f5
 ffffffff82d06d5d ffffffff825108b0 0000000000000000 ffffffff81a6b8f1
Call Trace:
 <IRQ> 
 [<ffffffff8158562d>] flush_unmaps_timeout+0x2d/0x30
 [<ffffffff8105ca7a>] call_timer_fn+0x8a/0x370
 [<ffffffff8105c9f5>] ? call_timer_fn+0x5/0x370
 [<ffffffff81585600>] ? flush_unmaps+0x170/0x170
 [<ffffffff8105cf9c>] run_timer_softirq+0x23c/0x390
 [<ffffffff8105424f>] __do_softirq+0xff/0x440
 [<ffffffff8105474d>] irq_exit+0xcd/0xe0
 [<ffffffff816f764b>] smp_apic_timer_interrupt+0x6b/0x9b
 [<ffffffff81596743>] ? release_sock+0x193/0x1f0
 [<ffffffff816f67af>] apic_timer_interrupt+0x6f/0x80
 <EOI> 
 [<ffffffff816edca0>] ? retint_restore_args+0xe/0xe
 [<ffffffff81052eb2>] ? local_bh_enable_ip+0x82/0xf0
 [<ffffffff816ed00a>] _raw_spin_unlock_bh+0x3a/0x40
 [<ffffffff81596743>] release_sock+0x193/0x1f0
 [<ffffffffa04b6331>] atalk_sendmsg+0x91/0x640 [appletalk]
 [<ffffffff811de020>] ? splice_from_pipe_feed+0x140/0x140
 [<ffffffff81592529>] sock_sendmsg+0x99/0xd0
 [<ffffffff81091e4f>] ? local_clock+0x3f/0x50
 [<ffffffff81091e4f>] ? local_clock+0x3f/0x50
 [<ffffffff81592597>] kernel_sendmsg+0x37/0x50
 [<ffffffff81594e2a>] sock_no_sendpage+0x8a/0xa0
 [<ffffffff8159162b>] kernel_sendpage+0x1b/0x30
 [<ffffffff8159166a>] sock_sendpage+0x2a/0x30
 [<ffffffff811de088>] pipe_to_sendpage+0x68/0x80